1. The carpenter was suffering particularly, but he showed grit and spirit.
2. But our revived spirits were not to be damped by difficulties on the last stage of the journey, and we camped cheerfully for breakfast.
Explanation:
These two are the best choice because they both demonstrate that the men have been in difficult situations and they have a determined positive outlook. the first sentence describes the carpenter as suffering, but then also determined with the word "grit". The second sentence refers to their obstacles as "difficulties", and it also describes them as camping cheerfully.